Societe Nationale D'etude Et De Construction De Moteurs D'aviation

Gilles J Bessenay

Daniel G Girault

Gerard Philippe Gauthier

Joel M Benoit

Ludovic Edmond Molliex

Jean-Claude Robert Berthelemy

An apparatus for producing a circular metal article reinforced by fibres in selected parts of its cross-section is described in which a metal blank of the article is formed and provided with at least one annular groove opening in the axial direction, preforms of reinforcing fibre and filler metal are placed in the groove which is then closed by a metal plug, and the assembly is isothermally forged to produce the article in a single forging step which serves to compress the preforms, weld the assembly together, and shape the article. Such articles may be used for machining high performance rotors for turbojet engines.

Method of producing a circular fibre-reinforced metal article, and

A method of producing a circular metal article reinforced by fibres in selected parts of its cross-section is described in which a metal blank of the article is formed and provided with at least one annular groove opening in the axial direction, preforms of reinforcing fibre and filler metal are placed in the groove which is then closed by a metal plug, and the assembly is isothermally forged to produce the article in a single forging step which serves to compress the preforms, weld the assembly together, and shape the article. Such articles may be used for machining high performance rotors for turbojet engines. Apparatus for use in the method is also described.

A process for assembling at least two parts made from a composite material incorporating a ceramic or vitroceramic matrix reinforced by ceramic fibers. A continuous connection between these parts is achieved by approaching two of the parts along their respective edges to be assembled, forming a joint between the two parts by sewing with a tie or link of ceramic fibers from each of the parts to be assembled and heating the joints by a heating device employing a powerful and extremely localized heating until the two parts are welded together.

Process for the assembly of at least two parts made from a composite

A heat treatment installation for parts made of a composite material having a ceramic matrix and including a treatment enclosure which is connected to a microwave generator by a waveguide and which includes a press for hot pressing a part to be treated in the enclosure and a gas source for introducing a protective gas into the enclosure.

Installation and method for heat treating parts made of a composite

A molding apparatus for the hot pressing of parts made of refractory material includes at least one element, such as a mold or an intermediate element, which is formed by a material capable of withstanding high temperatures, having adequate mechanical resistance and possessing particular anisotropic properties of thermal conductivity, in particular as a result of a structure including thermally conductive fibers oriented so that a preferential heat transfer occurs towards the areas of the part which are furthest away from its edges of the part, ensuring homogeneous heating or cooling throughout the part at all times.

Growing community of inventors

Paris, France

Gilles J Bessenay